13: the entire level 4 Tegmark multiverse.
14: newly discovered level 5 Tegmarkian multiverse.
15: discover ordinal hierarchy of Tegmark universes, discover method of constructing the set of all ordinals without contradiction, create level n Tegmark universe for all n
From Hacker News.
This made me laugh, but from the look of it, I'd say there is little work to do to make it serious. Personally, I'd try to shorten it so it is punchier and more memorable.